Water-tube boiler



(No Model.)

F M. FLEISHBR WATER TUBE BOILER.

No. 304,090. Patented Aug. 26, 1884.

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MOYER- FLEISHER, OF PHILADELPHIA, PENNSYLVANIA.

WATER-TUBE BOILER.

SPECIFICATION forming part of Letters Patent No. 304,090, dated August 26, 1884.

Application filed April 15, 1584. (No model.)

To all 2072,0127, it may concern:

Be it known that I, lllOYER Frnrsnnn, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in WatenTube Boilers, of which the following is a specification.

My invention relates to improvements in means for adjusting in place the platc-plugs for closing hand-holes and in openings for their reception, and is specially adapted for use on the class of water-tube boilers. For this reason I will proceed to describe it as applied to such devices,alth0ugh I do not desire to restrict myself to such use. Boilers of this character-,as is well known, consist of groups of tubes the ends of which are expanded into a steam-circulating end chamber, commonly known as a header or water-leg. These headers are made to receive the ends of all the tubes of the boiler; but sometimes said headers are made in sections, each section adapted to re ceive two or more of the tubes. Said headers must be provided with hand-holes,'which before steam is generated have to be tightly closed. lVhcn the headers are made sectional, they are connected together by a short tube or open-ended thimblc, by which means a free circulation of steam is maintained. My improvement is adaptable to either form of header.

Hitherto there has been great difficulty in providing means for introducing within the chambers or boxes, as they are sometimes called) of the headers the closing plates or plugs for the hand-holes, which, as is well known, must have a larger area on the inside or lowersnrface, either by beveling or flaring the periphery or by overlapping or extending said plates a given distance within the box or chamber OYGl and beyond thehand-holc open ing, by which means the pressure of steam is resisted.

To overcome this difficulty has been the ob jcct of my improvement; and it consists in forming apertures for reception of the tubes, as well as the apertures for the connectingthimbles, when such are employed, larger in diameter relatively to the hand-hole-closing plugs, by which construction is provided one or more openings large enough for admission of the hand-hole-closing plates or plugs, and through which larger opening or openings said 'closingplates can be introduced into the respective headers, whether sectional or not, from the inside, and be readily placed in po sition for closing said hand-holes.

My improvement further contemplates that one or more of the apertures into which the ends of the tubes are to be expanded may be reduced in size by bushing. This construction admits the free passage (before the bushing is placed in position) of the closing-plate, when said plate is of much larger diameter than its opposite tube. So,too,may one or more of the handhole apertures be made much larger than its respective closing-platc, said aperture to be afterward reduced in diameter by bushing to a required size, thus admitting the intro; duction of the tubes and the elosingplateinto the header or watenlcg through such enlarged hand-hole aperture previous to its reduction by bushing, all as hereinafter described, and pointed out in the claims.

Referring to the accompanying drawings,in which like letters of reference point out similar parts on each figure, Figure l is an elcva tion of the side chamber or header of a watertube boiler. Fig. 2 is asection of the same on the line 313 Fig. 3 is an other elevation of a header. Fig. 4c is a sectional view thereof on the line :0 x.

A is the outer plate; B, the handholeplugs or plates; 0, the conncctingthimble; D, the boiler-tubes; E, the bushing, whichmaybe either expanded or screwed into place; b, the plug bridge or brace.

Figs. 2 and at fully illustrate my invention. It will be seen that one or more of the handhole openings are larger than necessary for passage of the tube, being made so for intro duction of the handhole plate, after which said enlarged opening is reduced to theproper size by screwing or expanding the bushing E into place; or the hand-hole plate may be in- 9 3 troduced through the thimble G, in which case the bushing l is dispensed with.

Itis manifest that thehaud-hole plugB may be introduced through the aperture for reception of the tube D,instead of through the thinlble 0, in which case the bushing E (see Fig. 2) must be employed.

In Figs. 2 and 4: Ihave shownthimble Cand bushing E E all of an enlarged sizerelativeto the hand-hole plate 13; but in practice it is not necessary that all be so enlarged; either one may be sufficient to carry out my invention.

Although the drawings illustrate my improvement as applied to a sectional header, I desire to be understood as not limiting myself to this special form, it being equally adaptable to a continuous vertical passage.

Myinvention, although simplein its nature, provides for a long felt want, and will be found very useful for the purpose intended.

"What I claim, and desire to secure by Letters Patent, is-

- 1. Aheaderforwater-tubeboilers,provided with aperture for the reception of connectingthimble O, aperture for the reception of tube D, and an aperture for reception of plug B, either or all-of the said apertures being made of larger diameter than the hand-hole plate, as and for the purpose intended, substantially as described.

2. In aheader for a water-tube boiler, having on one side of its shell hand-holes, and on its opposite side apertures for reception of tubes to be expanded therein, wherein the hand-hole-closing plates are larger in diameter upon their lower surface than the hand-holes, and wherein one or more of the tube-receiving apertures are of a larger diameter than the closing-plug B, whereby said closing-plug can be introduced within the shell of the header through the tube opening, in combination with bushing E, as and for the purpose in tended, substantially as described.

3. In a header for water-tube boilers, provided at one side with apertures for reception of tubes D, and on the opposite side withhandholes, wherein said hand-holes are larger in diameter than their closing-plugs B, in eombi- I nation with bushing E, wherebysaid hand holes may be reduced in diameter after the passage of the tubes D and introduction of the closing-plugs B,as and for the purpose intended, substantially as described.

MOYER FLEISHER. W'it n csses:

Ones. E. Pnnooixs'r, Man IE SCHULDT. 

